1 files changed, 134 insertions, 0 deletions
diff --git a/src/spatialaudio/qaudiolistener.cpp b/src/spatialaudio/qaudiolistener.cpp
new file mode 100644
index 000000000..ed4dbd58e
--- /dev/null
+++ b/src/spatialaudio/qaudiolistener.cpp
@@ -0,0 +1,134 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-3.0-only
+#include "qaudiolistener.h"
+#include "qaudioengine_p.h"
+#include "resonance_audio.h"
+#include <qaudiosink.h>
+#include <qurl.h>
+#include <qdebug.h>
+#include <qaudiodecoder.h>
+
+QT_BEGIN_NAMESPACE
+
+class QAudioListenerPrivate
+{
+public:
+    QAudioEngine *engine = nullptr;
+    QVector3D pos;
+    QQuaternion rotation;
+};
+
+/*!
+    \class QAudioListener
+    \inmodule QtSpatialAudio
+    \ingroup spatialaudio
+    \ingroup multimedia_audio
+
+    \brief Defines the position and orientation of the person listening to a sound field
+    defined by QAudioEngine.
+
+    A QAudioEngine can have exactly one listener that defines the position and orientation
+    of the person listening to the sound field.
+ */
+
+/*!
+    Creates a listener for the spatial audio engine for \a engine.
+ */
+QAudioListener::QAudioListener(QAudioEngine *engine)
+    : d(new QAudioListenerPrivate)
+{
+    setEngine(engine);
+}
+
+/*!
+    Destroys the listener.
+ */
+QAudioListener::~QAudioListener()
+{
+    // Unregister this listener from the engine
+    setEngine(nullptr);
+    delete d;
+}
+
+/*!
+    Sets the listener's position in 3D space to \a pos. Units are in centimeters
+    by default.
+
+    \sa QAudioEngine::distanceScale
+ */
+void QAudioListener::setPosition(QVector3D pos)
+{
+    auto *ep = QAudioEnginePrivate::get(d->engine);
+    if (!ep)
+        return;
+    pos *= ep->distanceScale;
+    if (d->pos == pos)
+        return;
+
+    d->pos = pos;
+    if (ep && ep->resonanceAudio->api) {
+        ep->resonanceAudio->api->SetHeadPosition(pos.x(), pos.y(), pos.z());
+        ep->listenerPositionDirty = true;
+    }
+}
+
+/*!
+    Returns the current position of the listener.
+ */
+QVector3D QAudioListener::position() const
+{
+    auto *ep = QAudioEnginePrivate::get(d->engine);
+    if (!ep)
+        return QVector3D();
+    return d->pos/ep->distanceScale;
+}
+
+/*!
+    Sets the listener's orientation in 3D space to \a q.
+ */
+void QAudioListener::setRotation(const QQuaternion &q)
+{
+    d->rotation = q;
+    auto *ep = QAudioEnginePrivate::get(d->engine);
+    if (ep && ep->resonanceAudio->api)
+        ep->resonanceAudio->api->SetHeadRotation(d->rotation.x(), d->rotation.y(), d->rotation.z(), d->rotation.scalar());
+}
+
+/*!
+    Returns the listener's orientation in 3D space.
+ */
+QQuaternion QAudioListener::rotation() const
+{
+    return d->rotation;
+}
+
+/*!
+    \internal
+ */
+void QAudioListener::setEngine(QAudioEngine *engine)
+{
+    if (d->engine) {
+        auto *ed = QAudioEnginePrivate::get(d->engine);
+        ed->listener = nullptr;
+    }
+    d->engine = engine;
+    if (d->engine) {
+        auto *ed = QAudioEnginePrivate::get(d->engine);
+        if (ed->listener) {
+            qWarning() << "Ignoring attempt to add a second listener to the spatial audio engine.";
+            d->engine = nullptr;
+            return;
+        }
+        ed->listener = this;
+    }
+}
+
+/*!
+    Returns the engine associated with this listener.
+ */
+QAudioEngine *QAudioListener::engine() const
+{
+    return d->engine;
+}
+
+QT_END_NAMESPACE